What should I do if the speaker is already noisy due to moisture?

There is noise due to moisture because the signal circuit of the audio is disturbed by moisture leakage, and the speaker is disassembled with anhydrous alcohol.

Clean the circuit board and then dry it with a hair dryer It should be fine Take a look at the filter capacitor of the power supply.

Is there a problem with the oxidation filter capacitor, and a whining noise will be formed.

First; You can't send a wipe anymore.

Second; Remove the parts one by one, if you are not familiar with the computer hardware, before dismantling, make a record (mark) of each connection position, put the parts under the cracks into a clean refrigerator freezer (box), quick-freeze for 5-10 hours, and then take them out separately, remove the frost particles with a dry brush, and then dry them with a hair dryer, pay attention to the temperature should not be too high, in case the components are deformed or the device is damaged, and then use electrical cleaning agent (non-conductive. volatile) or carbon tetrachloride liquid, more than 99% ethanol can also be brushed clean, repeat the above blow drying. After all the processing is completed, assemble the wiring according to the original state, and turn on the machine after checking that it is correct!

ok!(The whole process must be patient and meticulous!) The buckle on the motherboard can be removed and wiped dry before attaching the clamp.

If you have a lot of money and don't care about this loss, don't bother, it's tiring! I wish you success, and you will succeed in concocting it!

Inject sewing machine oil into the potentiometer and move it back and forth a few times before there is no noise. The stereo is not like a TV, and the parts inside are damp as long as they are dry.

Remove the potentiometer and apply a soft lead pencil (type B is preferred) evenly on the wear marks of the toroidal resistive diaphragm.

Then apply 1 drop of sewing oil or other lubricating oil.

The speaker has not been used for a long time, and the sound is very small, there is noise, and the speaker speaker is damp. What to do.

To solve the problem of contact with the volume potentiometer, you can clean the potentiometer with anhydrous alcohol, rotate it while cleaning, until the alcohol flowing out does not contain impurities, and it can be used after drying. 2. Oxidation problems of plug-ins.

Clean it from the inside to the outside, and remove the oxide layer. 3. Oxidation of external connectors, cleaning method as above. 4. The components are damp, this problem needs to have a certain electronic basis, find the bad parts, replace them, sometimes the transformer will heat up when wet, and the moisture will be driven away with the increase of the use time.

Hope it helps.

Treat separately according to the degree and location of moisture.

1. The horn is damp. If there are water droplets on the surface of the thorn paper cone, gently absorb the water droplets with a clean, soft cloth or paper towel. Do not rub it too hard, otherwise it may cause the paper cone to crack or fall off.

Place the horn in a dry and ventilated place and let it air dry. Do not use a hair dryer, which will be heated unevenly and the drying speed between the surface and the inside of the paper cone will cause the paper cone to deform and the voice coil to lean on the magnet, resulting in scrapping.

2. The circuit part is damp. Do not turn on the power before processing, it may expand the failure. Disassemble the case and carefully take out the circuit board so as not to break the cables.

First, wipe off the water on the bottom plate with a dry cloth, wipe the fine seams with tweezers and rags, absorbent cotton, and paper towels, and clean the dust on the circuit board together. It can be blown by a hair dryer, focusing on the bottom of the transformer, the bottom of the manifold, the gap between the electrolytic capacitor and the bottom plate, and other large components that are not easy to rub. Generally, blow every 2 hours, three to five times.

3. Wooden chassis. Just wipe off the water stains.

4. Wipe the power plug and audio cable with a cloth and blow the hair dryer slightly.

Wait for the horn paper cone to be completely dry, you can power on the test machine, test the machine, the circuit board is not loaded into the casing, after powering on, carefully observe whether there is smoke, abnormal noise, smell, etc., if there is, immediately turn off the power and then check. If there is no abnormality, turn on the machine for 1 minute, turn off the power supply, pull out the power plug, touch it with your hand and smell it with your nose, and there is no serious fever or abnormal smell.

Everything is fine, just restore the sound.

Dry it with a hair dryer or let it out in the sun!

If the cause is really what you said dampness, it can be shaded or air-dried.

It is recommended to go to a professional repair place to deal with it.

If it doesn't matter, buy a new one.

Generally speaking, computer audio is mostly active speakers, and there will be amplifiers inside, so noise is inevitable, and the noise of active speakers can be roughly divided into electromagnetic interference, mechanical noise and thermal noise.

Electromagnetic interference can be mainly divided into power transformer interference and stray electromagnetic wave interference. Generally speaking, the power transformer interference is caused by the power flux leakage of the multi-speaker speaker, and the effect of installing a shielding cover for the transformer is very obvious when conditions permit, which can block the magnetic leakage to the greatest extent, and the shielding cover can only be made of iron materials. We should try to choose products with big brands and solid materials, and in addition, using external transformers is also a good solution.

Stray electromagnetic interference is common, and speaker wires, crossovers, wireless devices, or computer hosts can all become sources of interference. Keep the main speaker as far away from the computer as possible and reduce the number of peripheral wireless devices.

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First, avoid vibration, and second, avoid moisture! The speakers of the audio are generally in direct contact with the outside world, so they are prone to moisture, which has an impact.

Possible reasons for noise in the stereo:

1. If the wiring is not connected firmly, re-check the wiring.

2. The microphone is connected to the stereo, and the volume is turned up too much.

3. The overall volume of the audio is too large, which is the original small current sound that is amplified and broadcast 4. The speaker and the microphone of the speaker are not properly positioned, resulting in self-excitation, and there is a large current sound even if it is not spoken.